[3 marks Question Answer]

Question 13 Marks

Mention the main characteristics of meristematic tissues.

Answer

The main characteristics of meristematic tissues are:-
The cells are small.
The cells are thin-walled.
The cells are rich in cytoplasm with large prominent nuclei.
The cells lack spaces between them.
They divide actively, adding to the growth.

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Question 23 Marks

Differentiate between :
Simple and complex tissues.

Answer

Simple tissues	Complex tissues
1. It is composed of similar cells.	1. It is composed of different types of cells.
2. It occurs in all parts of plant.	2. It occurs only in vascular region.
3. Example: Parenchyma, collenchyma, sclerenchyma.	3. Example: Xylem and Phloem.

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Question 33 Marks

Differentiate between :
Collenchyma and sclerenchyma

Answer

Collenchyma	Sclerenchyma
1. It is consist of thick-walled tissue consisting of living cells.	1. It is consist of thick-walled tissue consisting of dead cells.
2. It is present in the growing stems and leaves.	2. It is found in hard parts of the plant body.
3. It provide Mechanical support to the plant parts.	3. It provide strength to the plant parts.

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Question 43 Marks

Differentiate between :
Parenchyma and collenchyma

Answer

Parenchyma	Collenchyma
1. Cell wall is relatively thin	1. The cell wall is irregularly thickened at the corners.
2. The cells in the parenchyma tissues are loosely packed.	2. There is very little space between the cells.
3. It is present in the softer parts of the plants.	3. It is present in the growing stems and leaves, providing mechanical support

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